Starry Night Multi-Color Lithophane

This is a multi-color lithophane.

You'll notice there is no example of the printed product - that's because I haven't gotten it to work but I'm posting it anyway in case it inspires you or if you have an idea on how to get this technique to work.

I took an image of Starry Night, created a color palate in the photo editor of black, brown, green, three shades of yellow, three shades of blue, and forced the image to "round" to the nearest available color value. I saved each color as a sepa